I don't think a 1 drive NAS is a good idea, even at 200$. You have NO redundancy at all. Even a two drive bay unit is limiting since if you want to have the redundancy, you lose one drive. 4 bays unit are pretty much it, you can start with 3 drive and have the space of two drive and one for redundancy. So if you have 3X4TB, you have 8 TB of actual space. And you have room to grow if you want with the last bay. Or you put bigger drives, it's up to you. I understand why someone how just want to see how it works without investing the money to do it would gravitate towards a single drive bay unit, but you're not getting the benefits from a NAS when you're doing that IMHO. Anyway, just my 2 cents.